EP3648222A1 - Battery cell - Google Patents

Battery cell Download PDF

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Publication number
EP3648222A1
EP3648222A1 EP19207154.6A EP19207154A EP3648222A1 EP 3648222 A1 EP3648222 A1 EP 3648222A1 EP 19207154 A EP19207154 A EP 19207154A EP 3648222 A1 EP3648222 A1 EP 3648222A1
Authority
EP
European Patent Office
Prior art keywords
electrode
battery cell
temperature control
electrode element
elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19207154.6A
Other languages
German (de)
French (fr)
Inventor
Volker Hohm
Bastian Schaar
Frank Wesche
Jörg Kaufmann
Helge Herten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP3648222A1 publication Critical patent/EP3648222A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
    • B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0422—Cells or battery with cylindrical casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/654—Means for temperature control structurally associated with the cells located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • the invention relates to a battery cell in the form of a round cell according to the preamble of the independent device claim and a method for producing a battery cell in the form of a round cell according to the independent method claim.
  • the aim of battery development is to make the volume of the batteries and individual battery cells as large as possible and to design the housing as small as possible so that all mechanical load cases can be endured without fire and without a short circuit.
  • the structural components In order to achieve the maximum power and energy density, the structural components must be designed to save space and without redundancies if possible.
  • sufficient installation space must be kept within the housing for the electrical lines and control units.
  • the battery cells must in turn have the best possible thermal contact with the cooling device. Expansion effects due to aging, a so-called swelling, must also be taken into account.
  • Battery cells in the form of round cells have advantages with regard to swelling.
  • a disadvantage of the round cells is that the geometry of the battery cells is subject to a restriction.
  • the metal housing of the round cells is manufactured using a deep-drawing process, from which a cylindrical housing with a monolithically connected bottom emerges.
  • the relationship between length and radius can only be set to a limited extent.
  • a large number of smaller round cells requires a large amount of peripherals for fastening, electrical connection, cooling, etc., so that the limited space available is difficult to use.
  • a small number of larger round cells in turn has the disadvantage that uniform cooling of the larger round cells is problematic.
  • the object of the invention is therefore to provide an improved battery cell, for example for a modular battery, in particular for HV applications in electric vehicles.
  • the object of the invention is achieved by a battery cell with the features of the independent device claim and by a method for producing one Battery cell in the form of a round cell with the features of the independent process claim.
  • Preferred developments of the invention are listed in the dependent claims.
  • the invention provides a battery cell in the form of a round cell, comprising: at least one electrode element with an inside and an outside and at least one temperature control element, the inside of the at least one electrode element being at least partially spaced from the outside of the at least one electrode element with the aid of the temperature control element.
  • the battery cell can have at least one electrode element.
  • the at least one electrode element be it just a single one that is being wound, or each of a plurality of electrode elements each has an outside and an inside. If there is only one electrode element, this is correspondingly only an outer side and only an inner side. If there are several electrode elements, there is an outer side and an inner side of each electrode element.
  • the temperature-regulating element which is likewise band-shaped, is wrapped between the individual layers.
  • the temperature control element separates the outside of a winding layer from the inside of a winding layer of the single electrode element wound thereon. If there are several electrode elements, the at least one temperature control element is arranged between two adjacent electrode elements. In this way, the at least one temperature control element comes to rest between the outside of an electrode element and the inside of a next electrode element.
  • a round cell with dimensions of any size is provided, which is tempered uniformly.
  • the idea of the invention is that within the round cell, the layers with cell material (formed by the at least one electrode element) and cooling levels (formed by the at least one temperature control element) alternate continuously and thus fill the housing completely, if desired.
  • the electrical connection and the connections to the cooling (routing) take place on the end faces of the round cells.
  • the range or the performance of the Battery cell controlled and / or varied. This creates a cavity in the core of the round cell.
  • one or more fillers can be provided which protect the remaining electrode elements in the battery cell.
  • the battery cell according to the invention can advantageously be used for HV applications, for example in electric vehicles.
  • Comparably large round cells can be provided, the length of which can advantageously utilize the available installation space in the transverse direction of the vehicle.
  • Such battery cells can be installed accordingly in the vehicle transverse direction. This means that the available space in the vehicle can be optimally used.
  • the weight of the battery is reduced with one or more such battery cells, since fewer components are required for fastening, electrical connection, cooling, etc.
  • the at least one temperature control element according to the invention enables homogeneous cooling over a, preferably arbitrarily large, radius and a, preferably arbitrarily high, round cell. No additional measures for swelling are required, since this function is already fulfilled by the round cell.
  • the round cell according to the invention is simple and inexpensive to manufacture.
  • the invention can provide in a battery cell that the at least one electrode element comprises at least two electrode elements, for example a first electrode element and a second electrode element.
  • a plug-in system can thus be provided.
  • the at least one temperature control element is arranged between the inside of a first electrode element and the outside of a second electrode element.
  • the at least one temperature control element can be arranged between the at least two electrode elements and temperature control the electrode elements evenly over their planar extent (cylinder jacket surface) and not only on the floor, as is currently the case with the known round cells.
  • the invention can provide for a battery cell that only one electrode element is provided, which is wound into a coil.
  • the manufacture of the battery cell can thus be considerably simplified.
  • the at least one temperature control element is wrapped between the inside of the electrode element and the outside of the same electrode element.
  • the temperature control element can do the whole Contact the electrode element evenly over the entire surface.
  • the temperature control element can thus contact the electrode element on both sides in each winding position.
  • the invention can provide that the at least one electrode element is in the form of a band.
  • the electrode production can thus be simplified and a battery cell can be provided which has an enlarged active area.
  • the invention can also provide that the at least one temperature control element is designed in the form of a band.
  • the production of the temperature control element can thus be simplified.
  • the at least one temperature control element can be designed in the form of a, for example electrically switchable, cooling element and / or a cooling conductor through which a cooling medium flows.
  • a cooling conductor through which a cooling medium flows can be connected to a vehicle cooler and / or a heat exchanger and can thus be functionally integrated in a vehicle-side cooling device for the electric motor and / or an air conditioning system for the vehicle interior.
  • the invention can provide for a battery cell that a housing is provided for the battery cell.
  • the housing can be advantageous in order to protect the battery cell from mechanical influences and contamination.
  • the housing can advantageously be designed with an increased wall thickness in order to be able to intercept large loads and to be able to pass them on to the vehicle body. This allows further system components to be saved and immediately leads to efficient use of space and a low weight of the battery cell with an increased energy content of the battery cell.
  • the invention can provide for a battery cell that the outside of the at least one electrode element is at least partially spaced from the housing with the aid of the at least one temperature control element.
  • the outermost layer of the at least one electrode element can be heated to the same temperature as the inner layers.
  • the invention can provide for a battery cell that the at least two electrode elements form a plug-in system. This enables a variable adjustment of the range and the performance of the battery cell.
  • the invention can provide in a battery cell that the at least two electrode elements are cylindrical in shape and / or can be arranged coaxially with one another. In this way, the at least two electrode elements can be positioned relative to one another in a space-saving manner. In addition, the storage of several electrode elements can be simplified.
  • the at least two electrode elements have different diameters.
  • the at least two electrode elements can be arranged one inside the other.
  • the invention can provide for a battery cell that the at least one temperature control element comprises at least two temperature control elements.
  • each of at least two temperature control elements can be arranged between two adjacent electrode elements.
  • the invention can furthermore provide that the at least two temperature-regulating elements are cylindrical in shape and / or can be arranged coaxially to one another. In this way, the at least two temperature control elements can be positioned in relation to one another in a space-saving manner. In addition, the storage and connection of several temperature control elements can be simplified.
  • the invention can provide for a battery cell that the at least two temperature control elements have different diameters.
  • the at least two temperature control elements can be arranged one inside the other.
  • the invention can provide for a battery cell at least one sleeve-shaped or cylindrical filler body, on which the at least one electrode element is arranged.
  • a hollow filler body can be arranged in the core of the battery cell, which protects the battery cell from the inside, supports it, and permits simple storage of the battery, for example on a bearing pin.
  • an electrode core and possibly further electrode elements can also be replaced in order to enable the range and the power of the battery cell to be adapted.
  • the invention can provide for the inside of the at least one electrode element to be spaced at least in sections from the at least one filling element by means of the at least one temperature control element.
  • the innermost layer of the at least one electrode element can be heated to the same temperature as the layers lying thereon.
  • the invention can provide in a battery cell that the at least one filler body has at least two filler bodies with different diameters, on which a scalable number can be arranged on the at least two electrode elements.
  • An adaptable plug system can thus be provided. In this way, differently powerful systems can be offered for sale, which can be upgraded gradually. At the same time, such a system with all of its plug-in parts can be used deliberately to avoid wear and aging of the cells. It is conceivable that smaller battery cells can be advantageous for shorter distances. Since such smaller battery cells have less weight, energy costs for moving the weight of the battery cell can be reduced. Such smaller battery cells can also be charged more quickly. For longer distances, battery cells completely filled with electrode elements can be advantageous in order to achieve a greater range of the electric vehicle.
  • a plug system that can be assembled flexibly and has uniform cooling of all electrode elements as plug elements can be provided.
  • An adaptable and / or consciously usable and / or upgradeable plug-in system can thus be provided.
  • the Figures 1 to 5 show a battery cell 100 in the form of a round cell.
  • the battery cell 100 has at least one electrode element 10 with an inner side I and an outer side A and at least one temperature control element 20.
  • the inside I of the at least one electrode element 10 is at least partially spaced from the outside A of the at least one electrode element 10 by means of the temperature control element 20.
  • the battery cell 100 has at least one electrode element 10.
  • the battery cell 100 can have only one, preferably band-shaped, electrode element 10, which can be wound into a coil.
  • the battery cell 100 can have a plurality of, preferably cylindrical, electrode elements 10, which can be plugged into one another.
  • a first electrode element 11, a second electrode element 12 and an electrode core 13 can be provided.
  • the Figures 1 and 2 each show a cross section through the battery cell 100 according to the invention.
  • the temperature control element 20 separates the outside A of a winding layer from the inside I of a winding layer of the single electrode element 10 wound thereon.
  • the at least one temperature control element 20 is arranged between two adjacent electrode elements 10. In this way, the at least one temperature control element 20 comes between the Outside A of an electrode element 10 and the inside I of a next electrode element 10.
  • a first temperature control element 21 is arranged between the inside I of the first electrode element 11 and the outside A of the second electrode element 12.
  • a second temperature control element 22 is arranged between the inside I of the second electrode element 12 and the outside A of the electrode core 13.
  • a third temperature control element 23 is arranged between a housing 101 and the outside A of the first electrode element 11.
  • Such positioning of the at least one temperature control element 20 ensures homogeneous temperature control of a round cell with dimensions of any size.
  • the layers with cell material (formed by one or more electrode elements 10) and cooling levels (formed by one or more temperature control elements 20) are alternated continuously within the round cell according to the invention.
  • the housing 101 can, if desired, be completely (cf. Figures 1 and 3rd ), fill out.
  • the temperature control element 20 can be designed in the form of a, for example electrically switchable, cooling element and / or a cooling conductor through which a cooling medium flows. In this way, flexibility in the selection and control of the temperature control element 20 can be provided. An electrically switchable cooling element can be controlled faster. A cooling conductor through which a cooling medium flows can advantageously be functionally integrated into a vehicle-side cooling device for the electric motor and / or an air conditioning system for the vehicle interior.
  • the Figures 4 and 5 illustrate that the range or power of the battery cell 100 can be controlled and / or varied by removing individual layers of cell material and possibly individual cooling levels in the core of the round cell.
  • one or more fillers 30 can be provided, which protect and support the remaining electrode elements 10 in the battery cell 100 in the core of the round cell.
  • the battery cell 100 according to the invention can advantageously be used for HV applications, for example in electric vehicles.
  • Comparably large round cells can be provided, which can be mounted lengthways in the transverse direction of the vehicle.
  • the housing 101 for the battery cell 100 can be designed as a load housing with an increased wall thickness in order to absorb large loads and / or to transmit them to the vehicle body.
  • the housing 101 can preferably be produced using a deep-drawing process and have a cylindrical jacket shape with a monolithically connected bottom.
  • the housing 101 can furthermore have a cover, not shown, for example lockable.
  • Corresponding connections for the electrical connection 102 and for the cooling 103 can be formed on the bottom and / or on the cover of the housing 101.
  • the Figures 3 , 4th and 5 make it clear that the at least two electrode elements 11, 12 can form a plug-in system in order to enable variable adjustment of the range and power of the battery cell 100.
  • the Figures 3 to 5 show a cross section on the left and a longitudinal section on the right through the respective battery cell 100.
  • the Figures 3 to 5 show that the at least two electrode elements 11, 12 and the at least two temperature control elements 21, 22 are cylindrical in shape and / or can be arranged coaxially with one another, so that they can rest against one another preferably without play.
  • the preferably play-free support of the at least two electrode elements 11, 12 on the at least two tempering elements 21, 22 results in the heat transfer for tempering the at least two electrode elements 11, 12.
  • the at least two electrode elements 11, 12 have different diameters D1, D2.
  • the at least two temperature control elements 21, 22 also have different diameters t1, t2.
  • FIGS. 4 and 5 show that in a battery cell 100 at least one sleeve-shaped (or hollow) or cylindrical (monolithic) filler body 30 can be provided, on which the at least one electrode element 10 can be arranged.
  • a first filler 31 is shown, which replaces the electrode core 13.
  • a second filler 32 is shown, which replaces the electrode core 13 and the second electrode element 12.
  • the at least two fillers 31, 32 have different diameters d1, d2.
  • An adaptable plug-in system can be provided with the aid of the at least one filling body 30.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Sustainable Development (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)
  • Battery Electrode And Active Subsutance (AREA)

Abstract

Batteriezelle (100) in Form einer Rundzelle, aufweisend: mindestens ein Elektrodenelement (10) mit einer Innenseite (I) und einer Außenseite (A) und mindestens ein Temperierungselement (20), wobei die Innenseite (I) des mindestens einen Elektrodenelementes (10) zumindest abschnittweise mithilfe des Temperierungselementes (20) von der Außenseite (A) des mindestens einen Elektrodenelementes (10) beabstandet ist.Battery cell (100) in the form of a round cell, comprising: at least one electrode element (10) with an inside (I) and an outside (A) and at least one temperature control element (20), the inside (I) of the at least one electrode element (10) is spaced at least in sections from the outside (A) of the at least one electrode element (10) with the aid of the temperature control element (20).

Description

Die Erfindung betriff eine Batteriezelle in Form einer Rundzelle nach dem Oberbegriff des unabhängigen Vorrichtungsanspruches und ein Verfahren zum Herstellen einer Batteriezelle in Form einer Rundzelle nach dem unabhängigen Verfahrensanspruch.The invention relates to a battery cell in the form of a round cell according to the preamble of the independent device claim and a method for producing a battery cell in the form of a round cell according to the independent method claim.

Bei der Batterieentwicklung wird das Ziel verfolgt, das Volumen der Batterien und einzelner Batteriezellen so groß wie möglich und das Gehäuse so klein wie möglich auszulegen, dass sämtliche mechanische Lastfälle ohne Brand und ohne Kurzschluss ertragen werden können. Um die maximale Leistungs- und Energiedichte zu erreichen, müssen die Strukturbauteile platzsparend und möglichst ohne Redundanzen ausgelegt werden. Zugleich muss neben dem Bauraum für die Batteriezellen ausreichend Bauraum innerhalb des Gehäuses für die elektrischen Leitungen und Steuergeräte vorgehalten werden. Die Batteriezellen müssen wiederum möglichst guten thermischen Kontakt zur Kühlvorrichtung aufweisen. Ebenso müssen alterungsbedingte Ausdehneffekte, ein sog. Swelling, berücksichtigt werden. Batteriezellen in Form von Rundzellen haben Vorteile in Hinblick auf Swelling. Nachteilig bei den Rundzellen ist hingegen, dass die Geometrie der Batteriezellen einer Einschränkung unterliegt. Das metallene Gehäuse der Rundzellen wird mithilfe eines Tiefziehprozesses hergestellt, aus dem ein zylindrisches Gehäuse mit einem monolithisch verbundenen Boden hervorgeht. Dabei ist das Verhältnis zwischen Länge und Radius nur begrenzt einstellbar. Eine hohe Anzahl an kleineren Rundzellen erfordert eine große Menge an Peripherie für Befestigung, elektrische Verschaltung, Kühlung usw., womit der begrenzte zur Verfügung stehende Bauraum nur schlecht ausgenutzt werden kann. Eine kleine Anzahl an größeren Rundzellen bringt wiederum den Nachteil mit sich, dass eine gleichmäßige Kühlung der größeren Rundzellen problematisch ist.The aim of battery development is to make the volume of the batteries and individual battery cells as large as possible and to design the housing as small as possible so that all mechanical load cases can be endured without fire and without a short circuit. In order to achieve the maximum power and energy density, the structural components must be designed to save space and without redundancies if possible. At the same time, in addition to the installation space for the battery cells, sufficient installation space must be kept within the housing for the electrical lines and control units. The battery cells must in turn have the best possible thermal contact with the cooling device. Expansion effects due to aging, a so-called swelling, must also be taken into account. Battery cells in the form of round cells have advantages with regard to swelling. A disadvantage of the round cells, however, is that the geometry of the battery cells is subject to a restriction. The metal housing of the round cells is manufactured using a deep-drawing process, from which a cylindrical housing with a monolithically connected bottom emerges. The relationship between length and radius can only be set to a limited extent. A large number of smaller round cells requires a large amount of peripherals for fastening, electrical connection, cooling, etc., so that the limited space available is difficult to use. A small number of larger round cells in turn has the disadvantage that uniform cooling of the larger round cells is problematic.

Die Aufgabe der Erfindung ist es daher, eine verbesserte Batteriezelle, bspw. für eine modular aufgebaute Batterie, insbesondere für HV-Anwendungen in Elektrofahrzeugen, bereitzustellen. Insbesondere ist es Aufgabe der Erfindung, eine einfach aufgebaute, kostengünstige und gewichtsreduzierte Batteriezelle bereitzustellen, die eine gleichmäßige Kühlung ermöglicht und die optimierte, vorzugsweise vergrößerte, Abmaße aufweist. Zudem ist es Aufgabe der Erfindung, ein verbessertes Verfahren zum Herstellen einer Batteriezelle in Form einer Rundzelle bereitzustellen, welches einfach, schnell und kostengünstig ausgeführt werden kann.The object of the invention is therefore to provide an improved battery cell, for example for a modular battery, in particular for HV applications in electric vehicles. In particular, it is an object of the invention to provide a simply constructed, inexpensive and weight-reduced battery cell which enables uniform cooling and which has optimized, preferably enlarged, dimensions. It is also an object of the invention to provide an improved method for producing a battery cell in the form of a round cell, which can be carried out simply, quickly and inexpensively.

Die erfindungsgemäße Aufgabe wird gelöst durch eine Batteriezelle mit den Merkmalen des unabhängigen Vorrichtungsanspruches und durch ein Verfahren zum Herstellen einer Batteriezelle in Form einer Rundzelle mit den Merkmalen des unabhängigen Verfahrensanspruches. In den abhängigen Ansprüchen sind bevorzugte Weiterbildungen der Erfindung aufgeführt. Merkmale, die zu den einzelnen Erfindungsaspekten offenbart werden, können in der Weise miteinander kombiniert werden, dass bzgl. der Offenbarung zu den Erfindungsaspekten der Erfindung stets wechselseitig Bezug genommen wird bzw. werden kann.The object of the invention is achieved by a battery cell with the features of the independent device claim and by a method for producing one Battery cell in the form of a round cell with the features of the independent process claim. Preferred developments of the invention are listed in the dependent claims. Features that are disclosed for the individual aspects of the invention can be combined with one another in such a way that reference is always made or can be made to one another with respect to the disclosure of the inventive aspects of the invention.

Die Erfindung stellt eine Batteriezelle in Form einer Rundzelle bereit, aufweisend: mindestens ein Elektrodenelement mit einer Innenseite und einer Außenseite und mindestens ein Temperierungselement, wobei die Innenseite des mindestens einen Elektrodenelementes zumindest abschnittweise mithilfe des Temperierungselementes von der Außenseite des mindestens einen Elektrodenelementes beabstandet ist.The invention provides a battery cell in the form of a round cell, comprising: at least one electrode element with an inside and an outside and at least one temperature control element, the inside of the at least one electrode element being at least partially spaced from the outside of the at least one electrode element with the aid of the temperature control element.

Die Batteriezelle kann mindestens ein Elektrodenelement aufweisen. D.h., dass nur ein, bspw. bandförmiges, Elektrodenelement vorgesehen sein kann, welches zu einem Wickel aufgewickelt werden kann, oder dass mehrere, bspw. zylindermantelförmige, Elektrodenelemente vorgesehen sein können, die koaxial zueinander angeordnet und ineinander gesteckt werden können. Das mindestens eine Elektrodenelement, sei es nur ein einziges, das gewickelt wird, oder jedes von mehreren Elektrodenelementen weist jeweils eine Außenseite und eine Innenseite auf. Bei nur einem Elektrodenelement ist das entsprechend nur eine Außenseite und nur eine Innenseite. Bei mehreren Elektrodenelementen sind es jeweils eine Außenseite und eine Innenseite an jedem Elektrodenelement. Bei nur einem Elektrodenelement wird das, bspw. ebenfalls bandförmige, Temperierungselement zwischen den einzelnen Schichten eingewickelt. Auf diese Weise trennt das Temperierungselement die Außenseite einer Wickelschicht von der Innenseite einer darauf aufgewickelten Wickelschicht des einzigen Elektrodenelementes. Bei mehreren Elektrodenelementen wird das mindestens eine Temperierungselement zwischen zwei benachbarten Elektrodenelementen angeordnet. Auf diese Weise kommt das mindestens eine Temperierungselement zwischen die Außenseite eines Elektrodenelementes und die Innenseite eines nächsten Elektrodenelementes zur Auflage.The battery cell can have at least one electrode element. This means that only one, for example band-shaped, electrode element can be provided, which can be wound up into a coil, or that several, for example cylindrical jacket-shaped, electrode elements can be provided which can be arranged coaxially with one another and inserted into one another. The at least one electrode element, be it just a single one that is being wound, or each of a plurality of electrode elements each has an outside and an inside. If there is only one electrode element, this is correspondingly only an outer side and only an inner side. If there are several electrode elements, there is an outer side and an inner side of each electrode element. In the case of only one electrode element, the temperature-regulating element, which is likewise band-shaped, is wrapped between the individual layers. In this way, the temperature control element separates the outside of a winding layer from the inside of a winding layer of the single electrode element wound thereon. If there are several electrode elements, the at least one temperature control element is arranged between two adjacent electrode elements. In this way, the at least one temperature control element comes to rest between the outside of an electrode element and the inside of a next electrode element.

Erfindungsgemäß wird eine Rundzelle mit beliebig großen Abmessungen bereitgestellt, die gleichmäßig temperiert wird. Der Erfindungsgedanke liegt dabei darin, dass innerhalb der Rundzelle sich die Lagen mit Zellmaterial (gebildet durch das mindestens eine Elektrodenelement) und Kühlungsebenen (gebildet durch das mindestens eine Temperierungselement) kontinuierlich abwechseln und damit das Gehäuse, wenn gewünscht vollständig, ausfüllen. Die elektrische Verschaltung sowie die Anschlüsse an die Kühlung (Routing) erfolgen an den Stirnflächen der Rundzellen. Durch Entnehmen einzelner Schichten von Zellmaterial und ggf. Kühlungsebenen kann die Reichweite oder die Leistung der Batteriezelle gesteuert und/oder variiert werden. In diesem Zuge entsteht ein Hohlraum im Kern der Rundzelle. Zum Stützen der Rundzelle von dem Kern heraus können ein oder mehrere Füllkörper bereitgestellt sein, die die verbleibenden Elektrodenelemente in der Batteriezelle schützen.According to the invention, a round cell with dimensions of any size is provided, which is tempered uniformly. The idea of the invention is that within the round cell, the layers with cell material (formed by the at least one electrode element) and cooling levels (formed by the at least one temperature control element) alternate continuously and thus fill the housing completely, if desired. The electrical connection and the connections to the cooling (routing) take place on the end faces of the round cells. By removing individual layers of cell material and possibly cooling levels, the range or the performance of the Battery cell controlled and / or varied. This creates a cavity in the core of the round cell. To support the round cell from the core, one or more fillers can be provided which protect the remaining electrode elements in the battery cell.

Die erfindungsgemäße Batteriezelle kann vorteilhafterweise für HV-Anwendungen, bspw. in Elektrofahrzeugen, verwendet werden. Dabei können vergleichbar große Rundzellen bereitgestellt werden, deren Länge den verfügbaren Bauraum in die Fahrzeugquerrichtung auf eine vorteilhafte Weise ausnutzen kann. Solche Batteriezellen können entsprechend in Fahrzeugquerrichtung verbaut werden. Somit kann der verfügbare Bauraum im Fahrzeug optimal ausgenutzt werden. Zugleich wird das Gewicht der Batterie mit einer oder mehreren solchen Batteriezellen reduziert, da weniger Komponenten für Befestigung, elektrische Verschaltung, Kühlung usw. benötigt werden. Das mindestens eine erfindungsgemäße Temperierungselement ermöglicht eine homogene Kühlung über einen, vorzugsweise beliebig großen, Radius und eine, vorzugsweise beliebig hohe, Rundzelle. Es werden keine Zusatzmaßnahmen für Swelling benötigt, da diese Funktion bereits durch die Rundzelle erfüllt ist. Außerdem ist die erfindungsgemäße Rundzelle einfach und kostengünstig in der Herstellung.The battery cell according to the invention can advantageously be used for HV applications, for example in electric vehicles. Comparably large round cells can be provided, the length of which can advantageously utilize the available installation space in the transverse direction of the vehicle. Such battery cells can be installed accordingly in the vehicle transverse direction. This means that the available space in the vehicle can be optimally used. At the same time, the weight of the battery is reduced with one or more such battery cells, since fewer components are required for fastening, electrical connection, cooling, etc. The at least one temperature control element according to the invention enables homogeneous cooling over a, preferably arbitrarily large, radius and a, preferably arbitrarily high, round cell. No additional measures for swelling are required, since this function is already fulfilled by the round cell. In addition, the round cell according to the invention is simple and inexpensive to manufacture.

Ferner kann die Erfindung bei einer Batteriezelle vorsehen, dass das mindestens eine Elektrodenelement mindestens zwei Elektrodenelemente, bspw. ein erstes Elektrodenelement und ein zweites Elektrodenelement, umfasst. Somit kann ein Stecksystem bereitgestellt werden.Furthermore, the invention can provide in a battery cell that the at least one electrode element comprises at least two electrode elements, for example a first electrode element and a second electrode element. A plug-in system can thus be provided.

Im Rahmen der Erfindung ist es denkbar, dass das mindestens eine Temperierungselement zwischen der Innenseite eines ersten Elektrodenelementes und der Außenseite eines zweiten Elektrodenelementes angeordnet ist. Somit kann das mindestens eine Temperierungselement zwischen den mindestens zwei Elektrodenelementen angeordnet sein und gleichmäßig die Elektrodenelemente über deren flächige Erstreckung (Zylindermantelfläche) und nicht nur am Boden temperieren, wie es zurzeit bei den bekannten Rundzellen der Fall ist.In the context of the invention, it is conceivable that the at least one temperature control element is arranged between the inside of a first electrode element and the outside of a second electrode element. Thus, the at least one temperature control element can be arranged between the at least two electrode elements and temperature control the electrode elements evenly over their planar extent (cylinder jacket surface) and not only on the floor, as is currently the case with the known round cells.

Weiterhin kann die Erfindung bei einer Batteriezelle vorsehen, dass nur ein Elektrodenelement vorgesehen ist, das zu einem Wickel aufgewickelt ist. Somit kann die Herstellung der Batteriezelle erheblich vereinfacht werden.Furthermore, the invention can provide for a battery cell that only one electrode element is provided, which is wound into a coil. The manufacture of the battery cell can thus be considerably simplified.

Im Rahmen der Erfindung ist es denkbar, dass das mindestens eine Temperierungselement zwischen der Innenseite des Elektrodenelementes und der Außenseite des gleichen Elektrodenelementes eingewickelt ist. Somit kann das Temperierungselement das ganze Elektrodenelement flächig gleichmäßig kontaktieren. Zudem kann somit das Temperierungselement das Elektrodenelement in jeder Wickellage beidseitig kontaktieren.In the context of the invention, it is conceivable that the at least one temperature control element is wrapped between the inside of the electrode element and the outside of the same electrode element. Thus, the temperature control element can do the whole Contact the electrode element evenly over the entire surface. In addition, the temperature control element can thus contact the electrode element on both sides in each winding position.

Des Weiteren kann die Erfindung bei einer Batteriezelle vorsehen, dass das mindestens eine Elektrodenelement bandförmig ausgebildet ist. Somit kann die Elektrodenherstellung vereinfacht und eine Batteriezelle bereitgestellt werden, die eine vergrößerte aktive Fläche aufweist.Furthermore, in the case of a battery cell, the invention can provide that the at least one electrode element is in the form of a band. The electrode production can thus be simplified and a battery cell can be provided which has an enlarged active area.

Außerdem kann die Erfindung bei einer Batteriezelle vorsehen, dass das mindestens eine Temperierungselement bandförmig ausgebildet ist. Somit kann die Herstellung des Temperierungselementes vereinfacht werden.In the case of a battery cell, the invention can also provide that the at least one temperature control element is designed in the form of a band. The production of the temperature control element can thus be simplified.

Im Rahmen der Erfindung kann das mindestens eine Temperierungselement in Form eines, bspw. elektrisch schaltbaren, Kühlelementes und/oder eines mit einem Kühlmedium durchflossenen Kühlleiters ausgeführt sein. Auf diese Weise kann eine Flexibilität bei der Wahl und der Ansteuerung des Temperierungselementes bereitgestellt werden. Ein elektrisch schaltbares Kühlelement kann schneller angesteuert werden. Ein mit einem Kühlmedium durchflossener Kühlleiter kann an einen Fahrzeugkühler und/oder einen Wärmetauscher angeschlossen werden und somit in einer fahrzeugseitigen Kühlvorrichtung für den Elektromotor und/oder einer Klimaanlage für den Fahrzeuginnerraum funktional integriert werden.In the context of the invention, the at least one temperature control element can be designed in the form of a, for example electrically switchable, cooling element and / or a cooling conductor through which a cooling medium flows. In this way, flexibility in the selection and control of the temperature control element can be provided. An electrically switchable cooling element can be controlled faster. A cooling conductor through which a cooling medium flows can be connected to a vehicle cooler and / or a heat exchanger and can thus be functionally integrated in a vehicle-side cooling device for the electric motor and / or an air conditioning system for the vehicle interior.

Zudem kann die Erfindung bei einer Batteriezelle vorsehen, dass ein Gehäuse für die Batteriezelle vorgesehen ist. Das Gehäuse kann vorteilhaft sein, um die Batteriezelle vor mechanischen Einflüssen und Verschmutzung zu schützen. Vorteilhafterweise kann das Gehäuse mit einer erhöhten Wandstärke ausgeführt sein, um große Lasten abfangen und vorzugsweise an die Fahrzeugkarosserie weiterleiten zu können. Dies erlaubt die Einsparung von weiteren Systembauteilen und führt sogleich zu einer effizienten Bauraumausnutzung und einem geringen Gewicht der Batteriezelle bei einem erhöhten Energieinhalt der Batteriezelle.In addition, the invention can provide for a battery cell that a housing is provided for the battery cell. The housing can be advantageous in order to protect the battery cell from mechanical influences and contamination. The housing can advantageously be designed with an increased wall thickness in order to be able to intercept large loads and to be able to pass them on to the vehicle body. This allows further system components to be saved and immediately leads to efficient use of space and a low weight of the battery cell with an increased energy content of the battery cell.

Ferner kann die Erfindung bei einer Batteriezelle vorsehen, dass die Außenseite des mindestens einen Elektrodenelementes zumindest abschnittweise mithilfe des mindestens einen Temperierungselementes vom Gehäuse beabstandet ist. Somit kann die äußerste Lage des mindestens einen Elektrodenelementes ebenso gleichmäßig temperiert werden wie die innen liegenden Lagen.Furthermore, the invention can provide for a battery cell that the outside of the at least one electrode element is at least partially spaced from the housing with the aid of the at least one temperature control element. Thus, the outermost layer of the at least one electrode element can be heated to the same temperature as the inner layers.

Weiterhin kann die Erfindung bei einer Batteriezelle vorsehen, dass die mindestens zwei Elektrodenelemente ein Stecksystem bilden. Somit kann eine variable Anpassung der Reichweite und der Leistung der Batteriezelle ermöglicht werden.Furthermore, the invention can provide for a battery cell that the at least two electrode elements form a plug-in system. This enables a variable adjustment of the range and the performance of the battery cell.

Des Weiteren kann die Erfindung bei einer Batteriezelle vorsehen, dass die mindestens zwei Elektrodenelemente zylindermantelförmig ausgebildet und/oder koaxial zueinander anordenbar sind. Auf diese Weise können die mindestens zwei Elektrodenelemente platzsparend zueinander positioniert werden. Zudem kann somit die Lagerung von mehreren Elektrodenelementen vereinfacht werden.Furthermore, the invention can provide in a battery cell that the at least two electrode elements are cylindrical in shape and / or can be arranged coaxially with one another. In this way, the at least two electrode elements can be positioned relative to one another in a space-saving manner. In addition, the storage of several electrode elements can be simplified.

Zudem ist es im Rahmen der Erfindung denkbar, dass die mindestens zwei Elektrodenelemente unterschiedliche Durchmesser aufweisen. Dadurch können die mindestens zwei Elektrodenelemente ineinander angeordnet werden.In addition, it is conceivable within the scope of the invention that the at least two electrode elements have different diameters. As a result, the at least two electrode elements can be arranged one inside the other.

Ferner kann die Erfindung bei einer Batteriezelle vorsehen, dass das mindestens eine Temperierungselement mindestens zwei Temperierungselemente umfasst. Im Falle von mehreren Elektrodenelementen kann jedes von mindestens zwei Temperierungselementen jeweils zwischen zwei benachbarten Elektrodenelementen angeordnet werden.Furthermore, the invention can provide for a battery cell that the at least one temperature control element comprises at least two temperature control elements. In the case of several electrode elements, each of at least two temperature control elements can be arranged between two adjacent electrode elements.

Weiterhin kann die Erfindung bei einer Batteriezelle vorsehen, dass die mindestens zwei Temperierungselemente zylindermantelförmig ausgebildet und/oder koaxial zueinander anordenbar sind. Auf diese Weise können die mindestens zwei Temperierungselemente platzsparend zueinander positioniert werden. Zudem kann somit die Lagerung sowie der Anschluss von mehreren Temperierungselementen vereinfacht werden.In the case of a battery cell, the invention can furthermore provide that the at least two temperature-regulating elements are cylindrical in shape and / or can be arranged coaxially to one another. In this way, the at least two temperature control elements can be positioned in relation to one another in a space-saving manner. In addition, the storage and connection of several temperature control elements can be simplified.

Des Weiteren kann die Erfindung bei einer Batteriezelle vorsehen, dass die mindestens zwei Temperierungselemente unterschiedliche Durchmesser aufweisen. Dadurch können die mindestens zwei Temperierungselemente ineinander angeordnet werden.Furthermore, the invention can provide for a battery cell that the at least two temperature control elements have different diameters. As a result, the at least two temperature control elements can be arranged one inside the other.

Ferner kann die Erfindung bei einer Batteriezelle mindestens einen hülsenförmigen oder zylinderförmigen Füllkörper vorsehen, auf welchem das mindestens eine Elektrodenelement angeordnet ist. Somit kann im Kern der Batteriezelle ein hohler Füllkörper angeordnet werden, der die Batteriezelle von innen schützt, stützt und eine einfache Lagerung der Batterie, bspw. auf einem Lagerbolzen, erlaubt. Mithilfe des mindestens einen Füllkörpers kann weiterhin ein Elektrodenkern und ggf. weitere Elektrodenelemente ersetzt werden, um eine Anpassung der Reichweite und der Leistung der Batteriezelle zu ermöglichen.Furthermore, the invention can provide for a battery cell at least one sleeve-shaped or cylindrical filler body, on which the at least one electrode element is arranged. Thus, a hollow filler body can be arranged in the core of the battery cell, which protects the battery cell from the inside, supports it, and permits simple storage of the battery, for example on a bearing pin. With the aid of the at least one filler, an electrode core and possibly further electrode elements can also be replaced in order to enable the range and the power of the battery cell to be adapted.

Weiterhin kann die Erfindung bei einer Batteriezelle vorsehen, dass die Innenseite des mindestens einen Elektrodenelementes zumindest abschnittweise mithilfe des mindestens einen Temperierungselementes von dem mindestens einen Füllkörper beabstandet ist. Somit kann die innerste Lage des mindestens einen Elektrodenelementes ebenso gleichmäßig temperiert werden wie die darauf liegenden Lagen.Furthermore, in the case of a battery cell, the invention can provide for the inside of the at least one electrode element to be spaced at least in sections from the at least one filling element by means of the at least one temperature control element. Thus, the innermost layer of the at least one electrode element can be heated to the same temperature as the layers lying thereon.

Des Weiteren kann die Erfindung bei einer Batteriezelle vorsehen, dass der mindestens eine Füllkörper mindestens zwei Füllkörper mit unterschiedlichen Durchmessern aufweist, auf welchen eine skalierbare Anzahl an den mindestens zwei Elektrodenelementen anordenbar sind. Somit kann ein anpassungsfähiges Stecksystem bereitgestellt werden. Auf diese Weise können unterschiedlich leistungsfähige Systeme zum Verkauf angeboten werden, die nach und nach aufgerüstet werden können. Zugleich kann ein solches System mit allen seinen Steckteilen bewusst eingesetzt werden, um Verschleiß und Alterung der Zellen zu vermeiden. Denkbar ist, dass für kürzere Strecken kleinere Batteriezellen von Vorteil sein können. Da solche kleinere Batteriezellen weniger Gewicht aufweisen, können Energiekosten zur Fortbewegung des Gewichts der Batteriezelle reduziert werden. Auch ein Aufladen solcher kleineren Batteriezellen kann schneller geschehen. Für längere Strecken können vollständig mit Elektrodenelementen ausgefüllte Batteriezellen von Vorteil sein, um eine größere Reichweite des Elektrofahrzeuges zu erreichen.Furthermore, the invention can provide in a battery cell that the at least one filler body has at least two filler bodies with different diameters, on which a scalable number can be arranged on the at least two electrode elements. An adaptable plug system can thus be provided. In this way, differently powerful systems can be offered for sale, which can be upgraded gradually. At the same time, such a system with all of its plug-in parts can be used deliberately to avoid wear and aging of the cells. It is conceivable that smaller battery cells can be advantageous for shorter distances. Since such smaller battery cells have less weight, energy costs for moving the weight of the battery cell can be reduced. Such smaller battery cells can also be charged more quickly. For longer distances, battery cells completely filled with electrode elements can be advantageous in order to achieve a greater range of the electric vehicle.

Zudem wird die erfindungsgemäße Aufgabe durch ein Verfahren zum Herstellen einer Batteriezelle in Form einer Rundzelle gelöst, die insbesondere wie oben beschrieben ausgebildet sein kann, aufweisend mindestens einen Schritt:

  • Positionieren mindestens eines Temperierungselements derart an mindestens einem Elektrodenelement der Batteriezelle, dass eine Innenseite des mindestens einen Elektrodenelementes zumindest abschnittweise mithilfe des Temperierungselementes von einer Außenseite des mindestens einen Elektrodenelementes beabstandet ist.
In addition, the object according to the invention is achieved by a method for producing a battery cell in the form of a round cell, which can be designed in particular as described above, comprising at least one step:
  • Positioning at least one temperature control element on at least one electrode element of the battery cell in such a way that an inside of the at least one electrode element is at least partially spaced from the outside of the at least one electrode element using the temperature control element.

Mithilfe des erfindungsgemäßen Verfahrens werden die gleichen Vorteile erreicht, die oben im Zusammenhang mit der erfindungsgemäßen Batteriezelle beschrieben wurden. Auf diese Vorteile wird vorliegend vollumfänglich Bezug genommen.With the aid of the method according to the invention, the same advantages are achieved which were described above in connection with the battery cell according to the invention. These advantages are referred to in full in the present case.

Außerdem kann ein Verfahren im Sinne der Erfindung mindestens einen weiteren Schritt aufweisen:

  • Ineinanderstecken von mindestens zwei Elektrodenelementen, sodass das mindestens eine Temperierungselement zwischen der Innenseite eines ersten Elektrodenelementes und der Außenseite eines zweiten Elektrodenelementes angeordnet ist.
In addition, a method according to the invention can have at least one further step:
  • Inserting at least two electrode elements into one another, so that the at least one temperature control element is arranged between the inside of a first electrode element and the outside of a second electrode element.

Somit kann ein flexibel zusammenbaubares Stecksystem bereitgestellt werden, welches eine gleichmäßige Kühlung aller Elektrodenelemente als Steckelemente aufweist.Thus, a plug system that can be assembled flexibly and has uniform cooling of all electrode elements as plug elements can be provided.

Ferner kann ein Verfahren im Sinne der Erfindung mindestens einen weiteren Schritt aufweisen:

  • Aufwickeln nur eines Elektrodenelementes, sodass das mindestens eine Temperierungselement zwischen der Innenseite des Elektrodenelementes und der Außenseite des gleichen Elektrodenelementes eingewickelt ist.
Furthermore, a method according to the invention can have at least one further step:
  • Winding up only one electrode element, so that the at least one temperature control element is wrapped between the inside of the electrode element and the outside of the same electrode element.

Somit kann ein günstiges und schnelles Verfahren zum Herstellen einer Batteriezelle mit einer homogenen Kühlung zur Verfügung gestellt werden.Thus, an inexpensive and quick method for producing a battery cell with homogeneous cooling can be made available.

Weiterhin kann ein Verfahren im Sinne der Erfindung mindestens einen weiteren Schritt aufweisen:

  • Bereitstellen von mindestens zwei Füllkörpern mit unterschiedlichen Durchmessern, und/oder
  • Einstecken von mindestens einem der zwei Füllkörper anstelle eines zylinderförmigen Elektrodenkerns und/oder anstelle mindestens eines von den mindestens zwei Elektrodenelementen.
Furthermore, a method according to the invention can have at least one further step:
  • Providing at least two packing elements with different diameters, and / or
  • Inserting at least one of the two packing elements instead of a cylindrical electrode core and / or instead of at least one of the at least two electrode elements.

Somit kann ein anpassungsfähiges und/oder bewusst einsetzbares und/oder aufrüstbares Stecksystem bereitgestellt werden.An adaptable and / or consciously usable and / or upgradeable plug-in system can thus be provided.

Weitere, die Erfindung verbessernde Maßnahmen werden nachstehend mit der Beschreibung der bevorzugten Ausführungsbeispiele der Erfindung anhand der Figuren näher dargestellt. Dabei können die in den Ansprüchen und in der Beschreibung erwähnten Merkmale jeweils einzeln für sich oder in beliebiger Kombination erfindungswesentlich sein. Dabei ist zu beachten, dass die Figuren nur einen beschreibenden Charakter haben und nicht dazu gedacht sind, die Erfindung in irgendeiner Form einzuschränken. Es zeigt:

Fig. 1
eine schematische Darstellung einer erfindungsgemäßen Batteriezelle gemäß einer möglichen Ausführungsform,
Fig. 2
eine schematische Darstellung einer erfindungsgemäßen Batteriezelle gemäß einer weiteren möglichen Ausführungsform,
Fig. 3
eine schematische Darstellung einer erfindungsgemäßen Batteriezelle in Form eines Stecksystems,
Fig. 4
eine schematische Darstellung einer erfindungsgemäßen Batteriezelle in Form eines Stecksystems mit einem möglichen Füllkörper, und
Fig. 5
eine schematische Darstellung einer erfindungsgemäßen Batteriezelle in Form eines Stecksystems mit einem weiteren möglichen Füllkörper.
Further measures improving the invention are described in more detail below with the description of the preferred exemplary embodiments of the invention with reference to the figures. The features mentioned in the claims and in the description can each be essential to the invention individually or in any combination. It should be noted that the figures are only descriptive and are not intended to limit the invention in any way. It shows:
Fig. 1
1 shows a schematic representation of a battery cell according to the invention in accordance with a possible embodiment,
Fig. 2
1 shows a schematic representation of a battery cell according to the invention in accordance with a further possible embodiment,
Fig. 3
1 shows a schematic representation of a battery cell according to the invention in the form of a plug-in system,
Fig. 4
a schematic representation of a battery cell according to the invention in the form of a plug-in system with a possible filler, and
Fig. 5
a schematic representation of a battery cell according to the invention in the form of a plug-in system with another possible filler.

Die Figuren 1 bis 5 zeigen eine Batteriezelle 100 in Form einer Rundzelle. Die Batteriezelle 100 weist mindestens ein Elektrodenelement 10 mit einer Innenseite I und einer Außenseite A und mindestens ein Temperierungselement 20 auf. Erfindungsgemäß ist es vorgesehen, dass die Innenseite I des mindestens einen Elektrodenelementes 10 zumindest abschnittweise mithilfe des Temperierungselementes 20 von der Außenseite A des mindestens einen Elektrodenelementes 10 beabstandet ist.The Figures 1 to 5 show a battery cell 100 in the form of a round cell. The battery cell 100 has at least one electrode element 10 with an inner side I and an outer side A and at least one temperature control element 20. According to the invention, it is provided that the inside I of the at least one electrode element 10 is at least partially spaced from the outside A of the at least one electrode element 10 by means of the temperature control element 20.

Die Batteriezelle 100 gemäß allen Figuren 1 bis 5 weist mindestens ein Elektrodenelement 10 auf. In der Ausführungsform der Figur 2 kann die Batteriezelle 100 nur ein, vorzugsweise bandförmiges, Elektrodenelement 10 aufweisen, welches zu einem Wickel aufgewickelt werden kann. In der Ausführungsform der Figur 1 kann die Batteriezelle 100 mehrere, vorzugsweise zylindermantelförmige, Elektrodenelemente 10 aufweisen, die ineinander gesteckt werden können. Dabei können ein erstes Elektrodenelement 11, ein zweites Elektrodenelemente 12 und ein Elektrodenkern 13 vorgesehen sein. Selbstverständlich sind mehrere Elektrodenelemente 10 ebenfalls denkbar. Die Figuren 1 und 2 zeigen jeweils einen Querschnitt durch die erfindungsgemäße Batteriezelle 100.The battery cell 100 according to all Figures 1 to 5 has at least one electrode element 10. In the embodiment of the Figure 2 For example, the battery cell 100 can have only one, preferably band-shaped, electrode element 10, which can be wound into a coil. In the embodiment of the Figure 1 For example, the battery cell 100 can have a plurality of, preferably cylindrical, electrode elements 10, which can be plugged into one another. A first electrode element 11, a second electrode element 12 and an electrode core 13 can be provided. Of course, several electrode elements 10 are also conceivable. The Figures 1 and 2 each show a cross section through the battery cell 100 according to the invention.

Das mindestens eine Elektrodenelement 10, sei es nur ein einziges, das gewickelt wird, oder jedes von mehreren Elektrodenelementen 10 weist jeweils eine Außenseite A und eine Innenseite I auf. Bei nur einem Elektrodenelement 10 gemäß der Figur 2 ist das entsprechend nur eine durchgehende Außenseite A und nur eine durchgehende Innenseite I. Bei mehreren Elektrodenelementen 10 gemäß der Figur 1 sind es jeweils eine Außenseite A und eine Innenseite I an jedem Elektrodenelement 10.The at least one electrode element 10, be it only a single one that is being wound, or each of a plurality of electrode elements 10 each have an outer side A and an inner side I. With only one electrode element 10 according to the Figure 2 this is accordingly only one continuous outer side A and only one continuous inner side I. In the case of a plurality of electrode elements 10 according to FIG Figure 1 there are an outer side A and an inner side I on each electrode element 10.

Bei nur einem Elektrodenelement 10 gemäß der Figur 2 wird das, bspw. ebenfalls bandförmiges, Temperierungselement 20 zwischen den einzelnen Schichten eingewickelt. Auf diese Weise trennt das Temperierungselement 20 die Außenseite A einer Wickelschicht von der Innenseite I einer darauf aufgewickelten Wickelschicht des einzigen Elektrodenelementes 10.With only one electrode element 10 according to the Figure 2 the, for example likewise band-shaped, tempering element 20 is wrapped between the individual layers. In this way, the temperature control element 20 separates the outside A of a winding layer from the inside I of a winding layer of the single electrode element 10 wound thereon.

Bei mehreren Elektrodenelementen 10 gemäß der Figur 1 wird das mindestens eine Temperierungselement 20 zwischen zwei benachbarten Elektrodenelementen 10 angeordnet. Auf diese Weise kommt das mindestens eine Temperierungselement 20 zwischen die Außenseite A eines Elektrodenelementes 10 und die Innenseite I eines nächsten Elektrodenelementes 10. In der Figur 1 ist ein erstes Temperierungselement 21 zwischen der Innenseite I des ersten Elektrodenelementes 11 und der Außenseite A des zweiten Elektrodenelementes 12 angeordnet. Ferner ist ein zweites Temperierungselement 22 zwischen der Innenseite I des zweiten Elektrodenelementes 12 und der Außenseite A des Elektrodenkerns 13 angeordnet. Zudem ist ein drittes Temperierungselement 23 zwischen einem Gehäuse 101 und der Außenseite A des ersten Elektrodenelementes 11 angeordnet.With several electrode elements 10 according to the Figure 1 the at least one temperature control element 20 is arranged between two adjacent electrode elements 10. In this way, the at least one temperature control element 20 comes between the Outside A of an electrode element 10 and the inside I of a next electrode element 10. In the Figure 1 a first temperature control element 21 is arranged between the inside I of the first electrode element 11 and the outside A of the second electrode element 12. Furthermore, a second temperature control element 22 is arranged between the inside I of the second electrode element 12 and the outside A of the electrode core 13. In addition, a third temperature control element 23 is arranged between a housing 101 and the outside A of the first electrode element 11.

Eine derartige Positionierung des mindestens einen Temperierungselementes 20 sorgt für eine homogene Temperierung einer Rundzelle mit auch beliebig großen Abmessungen. Vorteilhafterweise werden innerhalb der Rundzelle gemäß der Erfindung die Lagen mit Zellmaterial (gebildet durch ein oder mehrere Elektrodenelemente 10) und Kühlungsebenen (gebildet durch ein oder mehrere Temperierungselemente 20) kontinuierlich abgewechselt. Dabei kann das Gehäuse 101, wenn gewünscht vollständig (vgl. die Figuren 1 und 3), ausgefüllt werden.Such positioning of the at least one temperature control element 20 ensures homogeneous temperature control of a round cell with dimensions of any size. Advantageously, the layers with cell material (formed by one or more electrode elements 10) and cooling levels (formed by one or more temperature control elements 20) are alternated continuously within the round cell according to the invention. The housing 101 can, if desired, be completely (cf. Figures 1 and 3rd ), fill out.

Das Temperierungselement 20 kann in Form eines, bspw. elektrisch schaltbaren, Kühlelementes und/oder eines mit einem Kühlmedium durchflossenen Kühlleiters ausgeführt sein. Auf diese Weise kann eine Flexibilität bei der Wahl und der Ansteuerung des Temperierungselementes 20 bereitgestellt werden. Ein elektrisch schaltbares Kühlelement kann schneller angesteuert werden. Ein mit einem Kühlmedium durchflossener Kühlleiter kann vorteilhafterweise in eine fahrzeugseitige Kühlvorrichtung für den Elektromotor und/oder eine Klimaanlage für den Fahrzeuginnerraum funktional integriert werden.The temperature control element 20 can be designed in the form of a, for example electrically switchable, cooling element and / or a cooling conductor through which a cooling medium flows. In this way, flexibility in the selection and control of the temperature control element 20 can be provided. An electrically switchable cooling element can be controlled faster. A cooling conductor through which a cooling medium flows can advantageously be functionally integrated into a vehicle-side cooling device for the electric motor and / or an air conditioning system for the vehicle interior.

Wie es die Figuren 3 bis 5 andeuten, erfolgen die Anschlüsse für die elektrische Verschaltung 102 und für die Kühlung 103 an den Stirnflächen der Rundzellen.Like it Figures 3 to 5 indicate that the connections for the electrical circuit 102 and for the cooling 103 are made on the end faces of the round cells.

Die Figuren 4 und 5 verdeutlichen, dass durch Entnehmen einzelner Schichten von Zellmaterial und ggf. einzelner Kühlungsebenen im Kern der Rundzelle die Reichweite oder Leistung der Batteriezelle 100 gesteuert und/oder variiert werden kann. Zum Stützen der Rundzelle von dem Kern heraus können ein oder mehrere Füllkörper 30 bereitgestellt sein, der oder die die verbleibenden Elektrodenelemente 10 in der Batteriezelle 100 im Kern der Rundzelle schützen und stützen.The Figures 4 and 5 illustrate that the range or power of the battery cell 100 can be controlled and / or varied by removing individual layers of cell material and possibly individual cooling levels in the core of the round cell. To support the round cell from the core, one or more fillers 30 can be provided, which protect and support the remaining electrode elements 10 in the battery cell 100 in the core of the round cell.

Die erfindungsgemäße Batteriezelle 100 kann vorteilhafterweise für HV-Anwendungen, bspw. in Elektrofahrzeugen, verwendet werden. Dabei können vergleichbar große Rundzellen bereitgestellt werden, die der Länge nach in die Fahrzeugquerrichtung montiert werden können.The battery cell 100 according to the invention can advantageously be used for HV applications, for example in electric vehicles. Comparably large round cells can be provided, which can be mounted lengthways in the transverse direction of the vehicle.

Das Gehäuse 101 für die Batteriezelle 100 kann als ein Lastgehäuse mit einer erhöhten Wandstärke ausgeführt sein, um große Lasten abzufangen und/oder an die Fahrzeugkarosserie weiterzuleiten. Das Gehäuse 101 kann vorzugsweise mithilfe eines Tiefziehprozesses hergestellt werden und eine Zylindermantelform mit einem monolithisch verbundenen Boden aufweisen. Das Gehäuse 101 kann weiterhin einen nicht dargestellten, bspw. abschließbaren, Deckel aufweisen. Am Boden und/oder am Deckel des Gehäuses 101 können entsprechende Anschlüsse für die elektrische Verschaltung 102 und für die Kühlung 103 ausgebildet sein.The housing 101 for the battery cell 100 can be designed as a load housing with an increased wall thickness in order to absorb large loads and / or to transmit them to the vehicle body. The housing 101 can preferably be produced using a deep-drawing process and have a cylindrical jacket shape with a monolithically connected bottom. The housing 101 can furthermore have a cover, not shown, for example lockable. Corresponding connections for the electrical connection 102 and for the cooling 103 can be formed on the bottom and / or on the cover of the housing 101.

Die Figuren 3, 4 und 5 verdeutlichen, dass die mindestens zwei Elektrodenelemente 11, 12 ein Stecksystem bilden können, um eine variable Anpassung von Reichweite und Leistung der Batteriezelle 100 zu ermöglichen. Die Figuren 3 bis 5 zeigen links einen Querschnitt und rechts einen Längsschnitt durch die jeweilige Batteriezelle 100.The Figures 3 , 4th and 5 make it clear that the at least two electrode elements 11, 12 can form a plug-in system in order to enable variable adjustment of the range and power of the battery cell 100. The Figures 3 to 5 show a cross section on the left and a longitudinal section on the right through the respective battery cell 100.

Die Figuren 3 bis 5 zeigen, dass die mindestens zwei Elektrodenelemente 11, 12 sowie die mindestens zwei Temperierungselemente 21, 22 zylindermantelförmig ausgebildet und/oder koaxial zueinander anordenbar sind, sodass sie vorzugsweise spielfrei aneinander anliegen können. Durch die vorzugsweise spielfreie Auflage der mindestens zwei Elektrodenelemente 11, 12 an den mindestens zwei Temperierungselementen 21, 22 erfolgt der Wärmeübergang zum Temperieren der mindestens zwei Elektrodenelemente 11, 12.The Figures 3 to 5 show that the at least two electrode elements 11, 12 and the at least two temperature control elements 21, 22 are cylindrical in shape and / or can be arranged coaxially with one another, so that they can rest against one another preferably without play. The preferably play-free support of the at least two electrode elements 11, 12 on the at least two tempering elements 21, 22 results in the heat transfer for tempering the at least two electrode elements 11, 12.

Die mindestens zwei Elektrodenelemente 11, 12 weisen unterschiedliche Durchmesser D1, D2 auf. Die mindestens zwei Temperierungselemente 21, 22 weisen ebenfalls unterschiedliche Durchmesser t1, t2 auf.The at least two electrode elements 11, 12 have different diameters D1, D2. The at least two temperature control elements 21, 22 also have different diameters t1, t2.

Die Figuren 4 und 5 zeigen, dass bei einer Batteriezelle 100 mindestens ein hülsenförmiger (oder hohler) oder zylinderförmiger (monolithischer) Füllkörper 30 vorgesehen sein kann, auf welchem das mindestens eine Elektrodenelement 10 angeordnet sein kann.The Figures 4 and 5 show that in a battery cell 100 at least one sleeve-shaped (or hollow) or cylindrical (monolithic) filler body 30 can be provided, on which the at least one electrode element 10 can be arranged.

In der Figur 4 ist ein erster Füllkörper 31 gezeigt, der den Elektrodenkern 13 ersetzt. In der Figur 5 ist ein zweiter Füllkörper 32 gezeigt, der den Elektrodenkern 13 und das zweite Elektrodenelement 12 ersetzt.In the Figure 4 A first filler 31 is shown, which replaces the electrode core 13. In the Figure 5 A second filler 32 is shown, which replaces the electrode core 13 and the second electrode element 12.

Die mindestens zwei Füllkörper 31, 32 weisen unterschiedliche Durchmesser d1, d2 auf. Mithilfe des mindestens einen Füllkörpers 30 kann ein anpassungsfähiges Stecksystem bereitgestellt werden.The at least two fillers 31, 32 have different diameters d1, d2. An adaptable plug-in system can be provided with the aid of the at least one filling body 30.

Die voranstehende Beschreibung der Figuren beschreibt die vorliegende Erfindung ausschließlich im Rahmen von Beispielen. Selbstverständlich können einzelne Merkmale der Ausführungsformen, sofern es technisch sinnvoll ist, frei miteinander kombiniert werden, ohne den Rahmen der Erfindung zu verlassen.The above description of the figures describes the present invention exclusively in the context of examples. Of course, individual characteristics of the Embodiments, if it makes technical sense, can be freely combined with one another without leaving the scope of the invention.

BezugszeichenlisteReference list

1010th
ElektrodenelementElectrode element
1111
Elektrodenelement, erstes ElektrodenelementElectrode element, first electrode element
1212th
Elektrodenelement, zweites ElektrodenelementElectrode element, second electrode element
1313
Elektrodenelement, ElektrodenkernElectrode element, electrode core
2020th
TemperierungselementTemperature control element
2121
Temperierungselement, erstes TemperierungselementTemperature control element, first temperature control element
2222
Temperierungselement, zweites TemperierungselementTempering element, second tempering element
2323
Temperierungselement, drittes TemperierungselementTempering element, third tempering element
3030th
FüllkörperPacking
3131
Füllkörper, erster FüllkörperFiller, first fill
3232
Füllkörper, zweiter FüllkörperFiller, second fill
100100
BatteriezelleBattery cell
101101
Gehäusecasing
102102
elektrische Verschaltungelectrical wiring
103103
Kühlungcooling
AA
AußenseiteOutside
II.
Innenseiteinside
D1D1
Durchmesserdiameter
D2D2
Durchmesserdiameter
d1d1
Durchmesserdiameter
d2d2
Durchmesserdiameter
t1t1
Durchmesserdiameter
t2t2
Durchmesserdiameter

Claims (16)

Batteriezelle (100) in Form einer Rundzelle, aufweisend: mindestens ein Elektrodenelement (10) mit einer Innenseite (I) und einer Außenseite (A) und mindestens ein Temperierungselement (20), wobei die Innenseite (I) des mindestens einen Elektrodenelementes (10) zumindest abschnittweise mithilfe des Temperierungselementes (20) von der Außenseite (A) des mindestens einen Elektrodenelementes (10) beabstandet ist. Battery cell (100) in the form of a round cell, comprising: at least one electrode element (10) with an inside (I) and an outside (A) and at least one temperature control element (20), wherein the inside (I) of the at least one electrode element (10) is at least partially spaced apart from the outside (A) of the at least one electrode element (10) by means of the temperature control element (20). Batteriezelle (100) nach Anspruch 1,
dadurch gekennzeichnet,
dass das mindestens eine Elektrodenelement (10) mindestens zwei Elektrodenelemente (11, 12) umfasst,
und/oder dass das mindestens eine Temperierungselement (20) zwischen der Innenseite (I) eines ersten Elektrodenelementes (11) und der Außenseite (A) eines zweiten Elektrodenelementes (12) angeordnet ist.Battery cell (100) according to claim 1,
characterized,
that the at least one electrode element (10) comprises at least two electrode elements (11, 12),
and / or that the at least one temperature control element (20) is arranged between the inside (I) of a first electrode element (11) and the outside (A) of a second electrode element (12). Batteriezelle (100) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass nur ein Elektrodenelement (10) vorgesehen ist, das zu einem Wickel aufgewickelt ist,
und/oder dass das mindestens eine Temperierungselement (20) zwischen der Innenseite (I) des Elektrodenelementes (10) und der Außenseite (A) desgleichen Elektrodenelementes (10) eingewickelt ist.Battery cell (100) according to claim 1 or 2,
characterized,
that only one electrode element (10) is provided, which is wound into a coil,
and / or that the at least one temperature control element (20) is wrapped between the inside (I) of the electrode element (10) and the outside (A) of the same electrode element (10). Batteriezelle (100) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass das mindestens eine Elektrodenelement (10) bandförmig ausgebildet ist,
und/oder dass das mindestens eine Temperierungselement (20) bandförmig ausgebildet ist.Battery cell (100) according to one of the preceding claims,
characterized,
that the at least one electrode element (10) is in the form of a band,
and / or that the at least one temperature control element (20) is in the form of a band. Batteriezelle (100) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass das mindestens eine Temperierungselement (20) in Form eines Kühlelementes und/oder eines mit einem Kühlmedium durchflossenen Kühlleiters ausgeführt ist.Battery cell (100) according to one of the preceding claims,
characterized,
that the at least one temperature control element (20) is designed in the form of a cooling element and / or a cooling conductor through which a cooling medium flows. Batteriezelle (100) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass ein Gehäuse (101) für die Batteriezelle (100) vorgesehen ist,
und/oder dass die Außenseite (A) des mindestens einen Elektrodenelementes (10) zumindest abschnittweise mithilfe des mindestens einen Temperierungselementes (20) vom Gehäuse (101) beabstandet ist.Battery cell (100) according to one of the preceding claims,
characterized,
that a housing (101) for the battery cell (100) is provided,
and / or that the outside (A) of the at least one electrode element (10) is at least partially spaced from the housing (101) with the aid of the at least one temperature control element (20). Batteriezelle (100) nach Anspruch 2,
dadurch gekennzeichnet,
dass die mindestens zwei Elektrodenelemente (11, 12) ein Stecksystem bilden.Battery cell (100) according to claim 2,
characterized,
that the at least two electrode elements (11, 12) form a plug-in system. Batteriezelle (100) nach Anspruch 2,
dadurch gekennzeichnet,
dass die mindestens zwei Elektrodenelemente (11, 12) zylindermantelförmig ausgebildet und/oder koaxial zueinander anordenbar sind,
und/oder dass die mindestens zwei Elektrodenelemente (11, 12) unterschiedliche Durchmesser (D1, D2) aufweisen.Battery cell (100) according to claim 2,
characterized,
that the at least two electrode elements (11, 12) are cylindrical in shape and / or can be arranged coaxially with one another,
and / or that the at least two electrode elements (11, 12) have different diameters (D1, D2). Batteriezelle (100) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass das mindestens eine Temperierungselement (20) mindestens zwei Temperierungselemente (21, 22) umfasst.Battery cell (100) according to one of the preceding claims,
characterized,
that the at least one temperature control element (20) comprises at least two temperature control elements (21, 22). Batteriezelle (100) nach Anspruch 9,
dadurch gekennzeichnet,
dass die mindestens zwei Temperierungselemente (21, 22) zylindermantelförmig ausgebildet und/oder koaxial zueinander anordenbar sind,
und/oder dass die mindestens zwei Temperierungselemente (21, 22) unterschiedliche Durchmesser (t1, t2) aufweisen.Battery cell (100) according to claim 9,
characterized,
that the at least two temperature control elements (21, 22) are cylindrical in shape and / or can be arranged coaxially with one another,
and / or that the at least two temperature control elements (21, 22) have different diameters (t1, t2). Batteriezelle (100) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet,
dass mindestens ein hülsenförmiger oder zylinderförmiger Füllkörper (30) vorgesehen ist, auf welchem das mindestens eine Elektrodenelement (10) angeordnet ist, und/oder dass die Innenseite (I) des mindestens einen Elektrodenelementes (10) zumindest abschnittweise mithilfe des mindestens einen Temperierungselementes (20) von dem mindestens einen Füllkörper (30) beabstandet ist.Battery cell (100) according to one of the preceding claims,
characterized,
that at least one sleeve-shaped or cylindrical filler body (30) is provided, on which the at least one electrode element (10) is arranged, and / or that the inside (I) of the at least one electrode element (10) at least in sections with the aid of the at least one temperature control element (20 ) is spaced from the at least one filler (30). Batteriezelle (100) nach Anspruch 2,
dadurch gekennzeichnet,
dass der mindestens eine Füllkörper (30) mindestens zwei Füllkörper (31, 32) mit unterschiedlichen Durchmessern (d1, d2) aufweist, auf welchen eine skalierbare Anzahl an den mindestens zwei Elektrodenelementen (11, 12) anordenbar sind.Battery cell (100) according to claim 2,
characterized,
that the at least one filler (30) has at least two fillers (31, 32) with different diameters (d1, d2), on which a scalable number of the at least two electrode elements (11, 12) can be arranged. Verfahren zum Herstellen einer Batteriezelle (100) in Form einer Rundzelle, aufweisend mindestens einen Schritt: - Positionieren mindestens eines Temperierungselements (20) derart an mindestens einem Elektrodenelement (10) der Batteriezelle (100), dass eine Innenseite (I) des mindestens einen Elektrodenelementes (10) zumindest abschnittweise mithilfe des Temperierungselementes (20) von einer Außenseite (A) des mindestens einen Elektrodenelementes (10) beabstandet ist. Method for producing a battery cell (100) in the form of a round cell, comprising at least one step: - Positioning at least one temperature control element (20) on at least one electrode element (10) of the battery cell (100) in such a way that an inside (I) of the at least one electrode element (10), at least in sections, using the temperature control element (20) from an outside (A) of the at least one electrode element (10) is spaced apart. Verfahren nach Anspruch 13,
dadurch gekennzeichnet,
dass das Verfahren mindestens einen weiteren Schritt aufweist: - Ineinanderstecken von mindestens zwei Elektrodenelementen (11, 12), sodass das mindestens eine Temperierungselement (20) zwischen der Innenseite (I) eines ersten Elektrodenelementes (11) und der Außenseite eines zweiten Elektrodenelementes (12) angeordnet ist. A method according to claim 13,
characterized,
that the method has at least one further step: - Inserting at least two electrode elements (11, 12) into one another so that the at least one temperature control element (20) is arranged between the inside (I) of a first electrode element (11) and the outside of a second electrode element (12). Verfahren nach Anspruch 13 oder 14,
dadurch gekennzeichnet,
dass das Verfahren mindestens einen weiteren Schritt aufweist: - Aufwickeln nur eines Elektrodenelementes (10), sodass das mindestens eine Temperierungselement (20) zwischen der Innenseite (I) des Elektrodenelementes (10) und der Außenseite (A) desgleichen Elektrodenelementes (10) eingewickelt ist. The method of claim 13 or 14,
characterized,
that the method has at least one further step: - Winding up only one electrode element (10) so that the at least one temperature control element (20) is wrapped between the inside (I) of the electrode element (10) and the outside (A) of the same electrode element (10). Verfahren nach einem der vorhergehenden Ansprüche 13 bis 15,
dadurch gekennzeichnet,
dass das Verfahren mindestens einen weiteren Schritt aufweist: - Bereitstellen von mindestens zwei Füllkörpern (31, 32) mit unterschiedlichen Durchmessern (d1, d2), und/oder - Einstecken von mindestens einem der zwei Füllkörper (31, 32) anstelle eines zylinderförmigen Elektrodenkerns (13) und/oder anstelle mindestens eines von den mindestens zwei Elektrodenelementen (11, 12). Method according to one of the preceding claims 13 to 15,
characterized,
that the method has at least one further step: - Providing at least two packing elements (31, 32) with different diameters (d1, d2), and / or - Inserting at least one of the two packing elements (31, 32) instead of a cylindrical electrode core (13) and / or instead of at least one of the at least two electrode elements (11, 12).
EP19207154.6A 2018-11-05 2019-11-05 Battery cell Pending EP3648222A1 (en)

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